Programming manual.
CNC 8070
11.
GEOMETRY ASSISTANCE
Corner chamfering, (G39)
·204·
(REF: 1709)
11.5 Corner chamfering, (G39)
Function G39 may be used to insert a chamfer of a particular size without having to calculate
the intersection points.
Programming
The chamfer definition must be programmed between the two paths that define the corner
to be chamfered. These paths may be linear and/or circular.
The programming format is "G39 I<size>", where the size value is programmed in millimeters
or in inches, depending on which are the active units.
Considerations
The "I" value of the chamfer size remains active until another value is programmed, therefore,
it won't be necessary to program it in successive chamfering operations of the same size.
The "I" value of the chamfer size is also used by functions:
G36 (Corner rounding) as rounding radius.
G37 (Tangential entry) as entry radius.
G38 (Tangential exit) as exit radius.
This means that the chamfer size set in G39 will be the new value of the entry radius, exit
radius or rounding radius when programming one of these functions or vice versa.
G01 G90 X25 Y60
G39 I5
G01 X40 Y0
G03 G90 X40 Y50 I0 J30
G39 I5
G01 X40 Y0
N10 G01 X10 Y10 F600
N20 G01 X10 Y50
N30 G36 I5 (Rounding. Radius=5)
N40 G01 X50 Y50
N50 G36 (Rounding. Radius=5)
N60 G01 X50 Y10
N70 G39 (Chamfer. Size=5)
N80 G01 X90 Y10
N90 G39 I10 (Chamfer. Size=10)
N100 G01 X90 Y50
N110 G36 (Rounding. Radius=10)
N120 G01 X70 Y50
N130 M30
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